<!-- page必要拥有唯一的id -->
<div  class="container" id="step_02">
    <legend>路由演示-step-2</legend>
    <span :class="@m_title_cls" :visible="@m_subStep.length>0">当前子页面为[{{@m_subStep}}]</span>
    <label class="radio" :for="(index,item) in @m_btn_radios">
        <input type="radio" name="optionsRadios" value="item.value" :on-click="@to(item.value)">
        Option{{index}}{{item.text}}
    </label>
    <div id="_stepDiv">

    </div>
</div>